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Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
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Dear Sirs,
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
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the big video recorder format s-vhs many features delicate in loading system of the cassette. Such machines are no longer manufactured, it would be too expensive.
 ;
THIS MANUAL IS VERY GOOD AND VERY CLEAR
PLEASE NOTE IT DOES NOT CONTAIN THE SETUP INFORMATION TO ALIGHN THE GEARS IN THE CD MECH IT DOES SHOW ALL THE PARTS AND THEIR LOCATIONS .
GM-X642,X542
22
Gain Control Power Indicator
If sound level is too low, even The power indicator lights when the volume of the car stereo used along power is switched on. with this power amplifier is turned up, turn gain control on front of the power amplifier clockwise. If the sound distorts when the volume is turned up,
BFC (Beat Frequency Control) Switch turn the gain control counter-clockwise.
� When using with an RCA equipped car
stereo (standard output of 500 mV), set to If you hear a beat while listening to an the NORMAL position. When using MW/LW broadcast with your car stereo, an RCA equipped Pioneer car stereo with change the BFC switch using a small max. output of 4 V or more, adjust level to standard tip screwdriver. match the car stereo output level.
� If you hear too much noise when using the
speaker input terminals, turn the gain control counter-clockwise.
Bass Boost Level Control
LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set LPF/HPF select switch as follows according the type of level around 60 Hz from 0 to 18 dB.
Bass Boost Level Control can boost the
� Bass Boost Level Control can be adjusted that is connected to speaker output connector and the car
only when the LPF/HPF select switch is stereo system: set to a position other than HPF.
LPF/HPF Select Audio frequency range Speaker Remarks Switch to be output Type
LPF (left) Very Low Frequency range Subwoofer Connect a subwoofer. OFF (center) Full range HPF (right) Low Frequency Full range Use if you want to cut the High Frequency very low frequency range because it is not necessary for the speakers you are using.
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